URGENT PLEASE circle the term that doesn't belong:

1. nodes of ranvier, myelin sheath, cell body, axon

2. cell body, centrioles, nucleolus, ribosomes

3. ganglia, cluster of cell bodies, PNS, clusters of glial cells

4. dendrites, neurotransmitters in vesicles, telodendria, synaptic knobs

5. gray matter, myelin, fiber tracts, white matter

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

Variety of living organisms; includes genetic, species, and ecological types.